ICLR: 6-K company filing

6-K 1 iconearningscallanddeficie.htm 6-K Document UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 6-K REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 For the month of May 2026 Commission File Number: 333-08704 ICON plc (Translation of registrant's name into English) South County Business Park, Leopardstown, Dublin 18, D18 X5R3, Ireland (Address of principal executive office) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F ☒ Form 40-F ☐ As previously disclosed in the Form 12b-25 filed on May 1, 2026 by ICON plc (the “Company”) with the U.S. Securities and Exchange Commission (the “SEC”), the Company requires additional time to review and finalize the information required to be presented in its Annual Report on Form 20-F for the year ended December 31, 2025 (“Form 20-F”). On May 19, 2026, in accordance with standard procedures related to the delayed filing of the Form 20-F with the SEC, the Company received a written notice (“Notice”) from The Nasdaq Stock Market LLC (“Nasdaq”) indicating that the Company was not in compliance with the periodic filing requirements for continued listing set forth in Nasdaq Listing Rule 5250(c)(1) (the “Listing Rule”). Nasdaq has provided the Company with 60 calendar days from the date of the notice to submit a plan to regain compliance. The Notice has no immediate effect on the listing or trading of the Company’s securities. However, if the Company fails to timely regain compliance with the Listing Rule, the Company’s securities will be subject to delisting from Nasdaq. The Company expects to regain compliance upon filing the Form 20-F, which it currently anticipates comp